CN102566636A - Vehicle-mounted voltage-stabilizing power supply - Google Patents
Vehicle-mounted voltage-stabilizing power supply Download PDFInfo
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- CN102566636A CN102566636A CN2010106136539A CN201010613653A CN102566636A CN 102566636 A CN102566636 A CN 102566636A CN 2010106136539 A CN2010106136539 A CN 2010106136539A CN 201010613653 A CN201010613653 A CN 201010613653A CN 102566636 A CN102566636 A CN 102566636A
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- power supply
- voltage
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- control chip
- vehicle
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Abstract
The invention discloses a vehicle-mounted voltage-stabilizing power supply which comprises a power supply input end and a power supply output end, wherein current at the power supply input end can realize power supply output through a circuit module including resistors R1-4, capacitors C1-5, a transistor BG3, diodes D1-2 and thyristors Z1-2. According to the vehicle-mounted voltage-stabilizing power supply disclosed by the invention, output voltage of a transformer is utilized for providing 12V stable voltage for a control chip. When the power supply is started, the front-end power supply is used for power supply of the control chip, and after the output exists at the startup back end of the transformer, the output voltage of the transformer is used for power supply of the control chip after the 12V stable voltage. Therefore, the control chip can work in an ideal working state, namely the output of a PWM (pulse width modulator) can well drive an MOSFET (metal oxide semiconductor field-effect transistor) tube to be turned on and turned off. The vehicle-mounted voltage-stabilizing power supply disclosed by the invention has the characteristics of reducing the volume of the power supply, reducing cost and realizing high efficiency.
Description
Technical field
The present invention relates to the improvement of specialized equipment power circuit.
Background technology
Existing vehicle-mounted stabilized voltage supply adopts serial regulating circuit to supply power to control chip more; Under the situation that wide voltage is imported, voltage ratio is lower; Can't be met the supply voltage of control chip requirement; After need it being boosted through booster circuit again voltage stabilizing be control chip power supply, make complicated circuit, power volume is relatively large.
Summary of the invention
The present invention is in order to satisfy the requirement that reduces power volume; Consider to select for use the lower main circuit control chip of a supply voltage requirement; Vehicle-mounted stabilized voltage supply control chip under the low input situation also can normally be started; Thereby can be and dwindle power volume and allow some leeway, and can improve the efficient of whole power supply through the power attenuation that reduces front end.When input voltage is low; The control chip supply voltage is stabilized in the lower scope; Make the control chip output voltage lower; And well the Driven MOSFET pipe on off state the PWM high level of control chip (because subtract about 0.4V), for head it off has improved the control chip feed circuit for chip power voltage.
In order to achieve the above object, a kind of vehicle-mounted stabilized voltage supply comprises power supply input end and power output end; Wherein, the electric current of power supply input end is realized power supply output through the circuit module that comprises resistance R 1-4, capacitor C 1-5, transistor BG3, diode D1-2, thyristor Z1-2.
The present invention utilizes the transformer output voltage that the burning voltage of 12V is provided for control chip.Use the front end power supply to supply power during power initiation, after there is output transformer startup rear end, utilize the transformer output voltage after the 12V voltage stabilizing, to supply power to control chip as control chip.Thereby control chip is operated under the desirable duty, i.e. what PWM output can well the Driven MOSFET pipe turns on and off.The present invention has power volume and reduces, and cost reduces, the characteristics that efficient is high.
Description of drawings
Accompanying drawing 1 is the control chip power supply circuit.
Embodiment
Like Fig. 1, vehicle-mounted stabilized voltage supply comprises power supply input end and power output end; Wherein, the electric current of power supply input end is realized power supply output through the circuit module that comprises resistance R 1-4, capacitor C 1-5, transistor BG3, diode D1-2, thyristor Z1-2.Utilize the transformer output voltage that the burning voltage of 12V is provided for control chip.Use the front end power supply to supply power during power initiation, after there is output transformer startup rear end, utilize the transformer output voltage after the 12V voltage stabilizing, to supply power to control chip as control chip.Thereby control chip is operated under the desirable duty, i.e. what PWM output can well the Driven MOSFET pipe turns on and off.The present invention has power volume and reduces, and cost reduces, the characteristics that efficient is high.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technician who is familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (1)
1. a vehicle-mounted stabilized voltage supply is characterized in that, comprises power supply input end and power output end; Wherein, the electric current of power supply input end is realized power supply output through the circuit module that comprises resistance R 1-4, capacitor C 1-5, transistor BG3, diode D1-2, thyristor Z1-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106136539A CN102566636A (en) | 2010-12-30 | 2010-12-30 | Vehicle-mounted voltage-stabilizing power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106136539A CN102566636A (en) | 2010-12-30 | 2010-12-30 | Vehicle-mounted voltage-stabilizing power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102566636A true CN102566636A (en) | 2012-07-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106136539A Pending CN102566636A (en) | 2010-12-30 | 2010-12-30 | Vehicle-mounted voltage-stabilizing power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102566636A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679087A (en) * | 2013-11-26 | 2015-06-03 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted low-dropout linear voltage stabilizer circuit and low-voltage compensating circuit thereof |
| CN105892547A (en) * | 2015-01-29 | 2016-08-24 | 法雷奥电机设备公司 | System For Stabilising A Supply Voltage Of An On-Board Electrical Network Of A Motor Vehicle |
| CN110277911A (en) * | 2018-03-15 | 2019-09-24 | 深圳市三诺数字科技有限公司 | Power supply circuit and sound equipment applied to sound equipment |
-
2010
- 2010-12-30 CN CN2010106136539A patent/CN102566636A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104679087A (en) * | 2013-11-26 | 2015-06-03 | 惠州市德赛西威汽车电子有限公司 | Vehicle-mounted low-dropout linear voltage stabilizer circuit and low-voltage compensating circuit thereof |
| CN104679087B (en) * | 2013-11-26 | 2016-08-17 | 惠州市德赛西威汽车电子股份有限公司 | Vehicle-mounted low differential voltage linear voltage stabilizer circuit and low-voltage compensation circuit thereof |
| CN105892547A (en) * | 2015-01-29 | 2016-08-24 | 法雷奥电机设备公司 | System For Stabilising A Supply Voltage Of An On-Board Electrical Network Of A Motor Vehicle |
| CN110277911A (en) * | 2018-03-15 | 2019-09-24 | 深圳市三诺数字科技有限公司 | Power supply circuit and sound equipment applied to sound equipment |
| CN110277911B (en) * | 2018-03-15 | 2024-06-11 | 深圳市三诺数字科技有限公司 | Power supply circuit applied to sound equipment and sound equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |